4.5×0.94.5 2.4×1.12.4
0.3×0.30.3+0.3 2.8×9928×9.9
4.8×13= 4.8×1.3= ×1.3=0.624
2.87×36 = 2.87×0.36 = 28.7×0.36 =
3.2×15= 3.2×1.5= 32× =4.8
5.6 9.9
0.1
6.5×0.8= 520 0.9×8.43 = 7587 1.46×2.7= 3942
1.92×0.9=
×=38.5
×=3.85
385÷=0.385
10000999 1.87×0.951.87
÷ a×1.5a÷ (a>0)